• Based on short openings, played in SCCT (mainly by chess engines average 3300-3500 Elo)• Each opening line is carefully hand tuned (it’s highly optimized for engine matches)• Perfect 2017 includes various openings, recommended to be used for tournaments, ratings…• No openings with winning percentage to be bellow 50 % for Whites and bellow 40% for Blacks• Book’s Depth is mainly up to 8 moves (exception for a few lines, which are up to 9/10 moves)• For book settings under Arena, ChessBase, ShredderClassic GUIs, please check the screenshots… • I've spent nearly 15 years period of time for the optimization of the current opening book lines• Before final release, mostly of the lines are tested with more than 1.000.000 SCCT games (since 2002)